Si476x High-Performance Automotive AM/FM Radio Receiver and HD Radio Tuner Description Features The Si476x radio receiver family employs 100% RF CMOS - Worldwide FM band support (64108 MHz) technology to bring outstanding receiver performance to - AM/FM HDR support the automotive infotainment industry, which demands high - Worldwide AM band support (5201710 kHz) performance and quality. - Advanced RDS/RBDS demodulator/decoder The Si476x receiver family supports worldwide FM and AM - Digital FM MPX decoder radio reception. Additional variants support weather band, - Integrated FM active splitter shortwave, longwave frequencies, and dual antenna FM - Addresses companion AF/RDS data receiver phase diversity reception. - Advanced AM/FM noise blankers The Si476x incorporates a digital processor for the - Dynamic AM/FM channel bandwidth control European Radio Data System (RDS) and the North - Advanced FM hi-cut control American Radio Broadcast Data System (RBDS) including all required symbol decoding, block synchronization, error - Programmable FM stereo-mono blend detection, and error correction functions. All odd-numbered - Programmable AM/FM soft mute variants in the family support AM/FM HD Radio channel - Full suite of signal metrics: RSSI, SNR, multi-path 2 reception with digital (I S) baseband I/Q outputs for interference, frequency offset, adjacent channel interface to a HD Radio demodulator/decoder. strength, USN 2 The family leverages Silicon Laboratories patented digital - Analog and digital (I S) audio outputs 2 architecture, delivering superior RF performance and - Digital (I S) baseband AM/FM I/Q interference rejection. The proven digital techniques - Analog FM MPX output provide excellent sensitivity in weak signal environments, - Low-IF architecture and superb selectivity and inter-modulation immunity in - Eliminates expensive 10.7 MHz IF ceramic filters strong signal environments. - On-chip AM/FM AGC with integrated resistor and The solution offers dynamic AM/FM channel bandwidth varactor banks control, auto-calibrated digital tuning, and proven AM/FM - Eliminates external pin diode attenuators and seek functionality based on multiple signal quality and varactors band parameters. The family offers highly flexible and - 1.5 to 5 V power supplies advanced audio processing including AM/FM noise - QFN 40, 6 x 6 x 0.85 mm blanking, programmable soft mute, FM multi-path - Pb-free/RoHS compliant mitigation, FM stereo-mono blend, and FM hi-cut. In - AEC-Q100 qualified addition, the Si476x provides an integrated clock oscillator 2 Applications or accepts a reference clock and an I C-compatible, 2-wire - OEM automotive infotainment systems control interface. The Si476x receiver system specifies a minimal bill of materials, resulting in a very small board - Aftermarket car radio systems space requirement and making the solution ideal for any - OEM automotive PND docking system automotive application from single tuner radios to multiple tuner radios addressing companion TMC/AF reception/ scanning. Si476x RF PKD WXI LNA LOUT/ ADC DAC FMXIP MPXOUT DSP MXR PKD IF PKD FMXIN ADC DAC ROUT RFREG REG R L DCLK DFS LNA FMO 0/90 DOUT FMI RDS RF PKD RF PKD INTB AMI LNA CNTRL RSTB ClK Gen VIO1 RFGND VIO2 Automotive AM/FM Tuner Copyright 2011 by Silicon Laboratories 11.10.11 FMAGC1 FMAGC2 XOUT XTAL1 XTAL2/ RCLK ICON ICIN ICIP ICOP IQFS IOUT A0 QOUT A1 IQCLK SDA SCLVA 31 20 VD LOUT/ 32 19 VIO1 MPXOUT 33 18 ROUT DFS2 RCLK/ 34 17 SCL XTAL2 XTAL1 35 16 SDA 36 15 DACREF RSTB ICIP 37 14 DOUT2 ICIN 38 13 DCLK2 FMAGC2 39 12 INTB FMAGC1 40 11 A0 Si476x High Performance Automotive AM/FM Radio Receiver and HD Radio (HDR) Tuner Selected Electrical Specifications Parameter Test Conditions Min Typ Max Units Ambient temperature 40 25 85 C Analog supply voltage 5 V (VA) 4.5 5 5.5 V Digital supply voltage 3.3 V (VD) 2.7 3.3 3.6 V Interface supply voltage (VIO1) 1.7 3.3 3.6 V Interface supply voltage (VIO2) 1.2 3.3 3.6 V Analog supply current 130 mA Digital supply current 60 mA Interface supply current (VIO1) 90 A Interface supply current (VIO2) 20 A FM Input frequency 64 108 MHz Tune time 0.9 ms AF scan time 7.5 ms Seek time/channel 20 ms Max frequency deviation 150 kHz AM Input frequency 510 1710 kHz Seek time/channel 55 ms Pin Assignment Package Information NC 1 30 BLEND/NC FMXIP 2 29 DCLK FMXIN 3 28 DFS 4 27 RFGND DIN RFREG 5 26 QOUT GND PAD FMO 6 25 IOUT FMI 7 24 IQFS WXI/NC 8 23 IQCLK 9 22 AMI VIO2 Symbol Millimeters Symbol Millimeters NC 10 21 DBYP Min Nom Max Min Nom Max A 0.80 0.85 0.90 E 6.00 BSC A1 0.00 0.02 0.05 E2 3.95 4.10 4.25 b 0.18 0.25 0.30 L 0.30 0.40 0.50 D 6.00 BSC L1 0.03 0.05 0.08 D2 3.95 4.10 4.25 aaa 0.10 e 0.50 BSC bbb 0.10 Automotive AM/FM Tuner Copyright 2011 by Silicon Laboratories 11.10.11 Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders